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Arista

Arista CAB-D-D-400G-1M | 400G QSFP-DD DAC Cable, 400GBASE-CR8, Passive Twinax, 1m

Arista CAB-D-D-400G-1M | 400G QSFP-DD DAC Cable, 400GBASE-CR8, Passive Twinax, 1m

SKU:CAB-D-D-400G-1M

Stock Status: Enquire

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Description

The Arista CAB-D-D-400G-1M is a 400GBASE-CR8 passive Direct Attach Copper (DAC) cable delivering 400 Gigabit Ethernet connectivity between QSFP-DD ports over a 1-metre twinax copper assembly. Designed for high-density data centre spine-leaf architectures, it uses 8 x 50G PAM-4 electrical lanes to achieve 400G throughput with minimal latency and low power consumption — making it the cost-effective choice for within-rack and adjacent-rack server-to-switch or switch-to-switch interconnects.

Compliant with IEEE 802.3cd 400GBASE-CR8 and QSFP-DD MSA standards, the cable features 76-pin edge-type connectors and a hot-swappable form factor for maximum uptime and effortless servicing. Plug-and-play installation requires no additional configuration, and the passive copper design eliminates the need for active components. Buy today from iptrading.com.au — fast shipping and expert service across Australia.

Features

- Passive copper design delivers ultra-low latency and low power consumption with no active components
- Hot-swappable QSFP-DD form factor enables maximum uptime and simple field servicing
- 8 x 50G PAM-4 lanes aggregate to full 400G throughput per cable
- Cost-effective alternative to active optical cables for short-distance 400G interconnects
- IEEE 802.3cd 400GBASE-CR8 and QSFP-DD MSA standards compliant for broad interoperability
- Plug-and-play installation — no configuration required
- Ideal for within-rack and adjacent-rack server-to-switch and switch-to-switch links
- Supports high-density data centre spine-leaf and fabric architectures
- Part of Arista's comprehensive 400G, 100G, 40G, 25G, 10G, and 1G connectivity portfolio

Warranty

Arista hardware products come with a 1-year limited hardware warranty, covering defects in materials and workmanship under normal use.
Extended Warranty Options:
IP Trading offers tailored extended warranty solutions and support packages for Arista products. Contact our team to explore options that align with your organisation's needs.
https://www.arista.com/assets/data/pdf/Warranty.pdf

All technical data should be verified on the manufacturer data sheets.

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Technical Specifications

FAQs

Datasheet

Technical Specifications

- Part Number: CAB-D-D-400G-1M
- Speed: 400GBASE-CR8 (400 Gigabit Ethernet)
- Connector Type: QSFP-DD to QSFP-DD
- Cable Type: Passive Twinax Copper Direct Attach Cable (DAC)
- Cable Length: 1 metre (3.3 ft)
- Wire Gauge: 30AWG
- Signalling: PAM-4 (Pulse Amplitude Modulation 4-level)
- Electrical Lanes: 8 x 50G PAM-4
- Form Factor: QSFP-DD (Double Density)
- Connector Interface: 76-pin edge type, MSA-compliant
- Management Interface: 2-wire Interface (TWI/I2C)
- Standards Compliance: IEEE 802.3cd 400GBASE-CR8, QSFP-DD MSA
- Warranty: 1-Year Limited Hardware Warranty

FAQs

Q: What devices is the Arista CAB-D-D-400G-1M compatible with?
A: This cable is compatible with any equipment featuring QSFP-DD ports that support 400GBASE-CR8, including Arista 400G data centre switches and routers. It is QSFP-DD MSA-compliant, which means it is also broadly compatible with MSA-compliant QSFP-DD ports from other vendors.

Q: Is this a passive or active DAC cable?
A: The CAB-D-D-400G-1M is a passive twinax copper DAC cable. It requires no active electronic components, which results in lower power consumption, reduced latency, and lower cost compared to active optical solutions — ideal for short-distance deployments up to 1 metre.

Q: What is the maximum supported distance for this cable?
A: This cable supports a maximum distance of 1 metre, making it best suited for within-rack connections or adjacent-rack interconnects in high-density data centre environments.

Q: Does this cable require any special configuration to use?
A: No. The CAB-D-D-400G-1M is a plug-and-play solution. Simply insert it into compatible QSFP-DD ports and it will operate at 400G without requiring additional configuration or software setup.

Q: Can I purchase the Arista CAB-D-D-400G-1M in Australia through IP Trading?
A: Yes. IP Trading (iptrading.com.au) is an Australian B2B IT hardware reseller stocking Arista DAC cables with fast local shipping and expert pre-sales and post-sales support across Australia.

Q: What warranty is included with this cable?
A: Arista provides a 1-Year Limited Hardware Warranty covering parts, repair, or replacement with a 10 business day turnaround after the unit is received.

Datasheet

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